Hi everyone,
I'm new on this board, so here is my first question:
This past weekend at Home Depot I found out about something called ceramic brickets. Does anyone have any experience with these? Is it a good idea to replace my lava rocks with them? Do they work well?
Thanks for any response.

But instead of using ceramic briquettes look into using Weber's flavorizer bars.
You may have to cut them to fit. (they run from front to back, not side to side).
But they improve the performance of almost any grill.

You'll have to hear it from the gas owners. I used a gas grill once that had lava rocks and the flare-ups were terrible. You could turn the gas off and still have a fire to cook on. I’ve heard ceramic briquettes were a vast improvement over lava rocks. But best by far have been the comments on flavorizer bars. The prevent flare-ups, add flavor to food, and rarely required cleaning, maybe seasonally, and then they can be placed in a self-cleaning oven during its cleaning cycle. They sound simple and effective to me but you’ll need to hear it from those that own them.

The Webers have a place to sit the flavorizer bars above the burners. If you're adding them to a grill that isn't designed to use them, where do you put them? It seems to me that resting them on the burners is not as effective in preventing flare-ups and may affect the quality of the flame by restricting oxygen to it.

I've used a set of bars that I purchased at one of the big stores that was designed for generic use. It was expandable to width and used set screws as legs so the height was adjustable as well. It wasn't stainless but for $20 bucks or so who cares. It worked great.

The Webers have a place to sit the flavorizer bars above the burners. If you're adding them to a grill that isn't designed to use them, where do you put them? It seems to me that resting them on the burners is not as effective in preventing flare-ups and may affect the quality of the flame by restricting oxygen to it.

Or you can put them right on top of the grate where the ceramic/lava brickets would have sat.

YB,
I also use these sheets for the ease of cleaning: http://66.70.210.249/grill-topper.htmlI place a couple of them on the lower grate, and then top them with few ceramic brickets (to weigh them down). These sheets are pretty thick and they last me few months. When they start to erode , I just toss and replace them. I get 10 in a pack for $14.95. I’ve never used them for food as it shows in the picture.

YB,I also use these sheets for the ease of cleaning: http://66.70.210.249/grill-topper.htmlI place a couple of them on the lower grate, and then top them with few ceramic brickets (to weigh them down). These sheets are pretty thick and they last me few months. When they start to erode , I just toss and replace them. I get 10 in a pack for $14.95. I’ve never used them for food as it shows in the picture.

I don’t care what they claim. Nothing can survive 600-700 degrees of heat. Anyway, I only use the sheets on the lower grate for easy clean up. They also generate quite a bet of smoke. That makes them convenient and functional in my book.
Airfoil,
I know that you’re a charcoal fan; I’ve also used them on my charcoal grill. They make clean up easy, and they won’t allow small lumps to fall through the grate.